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Depression is a common non-motor symptom in patients with Parkinson's disease (PD) and difficult to treat. Crocin is a natural multipotential neuroprotective compound that has been shown to elicit antidepressant activity and is promising for the therapy of neuropsychological diseases. Here, we investigated the therapeutic effect of crocin in a mouse model of Parkinson's disease depression (PDD) and clarified the underlying mechanism. We prepared 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced subacute mouse model of PD, and found that around 60% of the model mice showed depression-like behavior, using the forced swimming test (FST). A regime of 10-day treatment of crocin alleviated the PDD symptoms. The crocin reduced the structural damage in soma volume and axon length of neurons and inhibited their spontaneous discharge in dopaminergic (DA) neurons in the ventral tegmental area (VTA). Notably, the MPTP-treated mice showed the decrease in the critical signaling for synaptic plasticity, including the proteins of PSD-95, synapsin-1, and GluR-1, in the medial prefrontal cortex (mPFC) where it receives efferent from VTA and regulates depression-like behavior. However, crocin treatment rescued the defect of the mammalian target of rapamycin (mTOR) signaling in PDD mice. Furthermore, the antidepressant action of crocin was blunted after blockade of mTOR signaling with the antagonist rapamycin. In conclusion, our study demonstrated that crocin protected the DA projection neurons in the VTA through activating mTOR, which subsequently improved the neural synaptic plasticity of mPFC, and ameliorated depression-like behavior in PD mice.Defective sperms cause fertilization failure under both in vivo and in vitro conditions. Therefore, providing optimal conditions during semen storage is a prerequisite for maintaining viability. The current study investigated bull semen quality in vitro and in vivo when zinc (Zn) nanoparticles were used as antioxidant during semen processing and cryopreservation. In total, 32 ejaculates were collected from four Holstein bulls. All ejaculates were pooled and diluted with Bioxcell-extender containing 0 (control group), 10-6, 10-5, 10-4, 10-3, and 10-2 M of Zn nanoparticles. Several physical and biochemical sperm parameters were determined after freeze-thawing process. In vitro embryo development rate and pregnancy rate were monitored after in vitro fertilization or artificial insemination using semen treated with Zn nanoparticles. Plasma membrane integrity was improved (P less then 0.05) in bull semen treated with 10-6 M (69.3%), and 10-2 (62.4%) of Zn nanoparticles compared to untreated group (51.3%). In addro. However, in vitro embryo development rate was increased when Zn nanoparticles were supplemented to IVM media. This support the notion of Zn nanoparticles beneficial action on improving bovine gametes quality without affecting pregnancy rate.Background Cases of e-cigarette or vaping product use-associated lung injury (EVALI) have rapidly reached epidemic proportions, yet there remain limited reports within the literature on the associated imaging findings. Objective We describe the most common imaging findings observed on chest computed tomography (CT) and chest radiograph (CXR) at presentation and at short-term follow-up at our major pediatric hospital. Materials and methods A retrospective review of the electronic medical records was performed on all patients with suspected EVALI who were treated at a major pediatric hospital and 11 patients were included for analysis. Two board-certified pediatric radiologists then categorized the CXRs as either normal or abnormal, and further performed a systematic review of the chest CTs for imaging findings in the lungs, pleura and mediastinum. Interrater discordance was reconciled by consensus review. Results The 11 patients (9 males2 females) ranged in age from 14 to 18 years. Gastrointestinal and constitolely based on the lack of respiratory symptoms. Despite extensive pulmonary involvement at presentation, findings may resolve on short-term follow-up imaging.In recent years, new somatostatin receptor agents (SSTRs) have become available for diagnostic imaging and therapy in neuroendocrine tumors. The novel SSTR ligand DOTA-DPhel-Tyr3-octreotate (Dotatate) in particular can be linked with 68Gallium for diagnostic imaging purposes, and with the β-emitter 177Lutetium for radiotherapy in the setting of neuroendocrine tumors. Dotatate imaging offers distinct advantages in the evaluation of neuroendocrine tumors compared to standard techniques, including greater target-to-background ratio and lesion conspicuity, high sensitivity/specificity, improved spatial resolution with positron emission tomography (PET)/CT or PET/MR, and decreased radiation exposure. Although currently off-label in pediatrics, Dotatate theranostics in children are being explored, most notably in the setting of neuroblastoma and hereditary neuroendocrine syndromes. https://www.selleckchem.com/ALK.html This article provides a multicenter case series of Dotatate imaging and therapy in pediatric patients in order to highlight the spectrum of potential clinical applications.Splenic masses present a diagnostic challenge to radiologists and clinicians alike, with a relative paucity of data correlating radiologic findings to pathological diagnosis in the pediatric population. To illustrate splenic mass imaging findings and approximate lesion prevalence, we retrospectively reviewed all splenectomies and splenic biopsies for splenic masses at a single academic pediatric hospital over a 10-year period in patients 18 years and younger. A total of 31 splenic masses were analyzed. Lesion prevalence, pathology and imaging features associated with sampled splenic masses are described. The lesions encountered include benign splenic cysts (9), vascular anomalies (7), hamartoma (3), leukemia/lymphoma (3), granulomata (3) and metastasis (2). We also identified single cases of angiosarcoma, splenic cord capillary hemangioma, congestive hemorrhage, and benign smooth muscle neoplasm.The development of pathological or compensatory-and-adaptive reactions in homoeothermic animals during various periods of hypothermia can be caused by shifts in the respiratory functions of the mitochondria. Short-term hypothermia promoted an increase in the rates of the glutamate- and succinate-dependent respiration of mitochondria. Phosphorylation rate increased as well, while oxidative phosphorylation coefficient (P/O), respiratory control, and 2,4-DNP sensitivity depended. Changes in respiratory characteristics in the dynamics of prolonged hypothermia depends on the type of substrate. Prolongation of hypothermia to 1 h was associated with further intensification of succinate-dependent respiration, decrease in P/O and respiratory control, while prolongation of hypothermia to 3 h led to their normalization. The majority of respiratory characteristics of glutamate-dependent respiration did not change under these conditions and their levels were the same as during short-term hypothermia.
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